Smokeless boiler-furnace.



J. COOK.

SMOKBLESS BOILER FURNAGE.

ABPLIoATloN-FILBD AUG.10. 1909.

Patented 'June 27, 1911.

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J. COOK.

SMOKELESS BOILER FURNACE. APPLIOTION FILED .AU-G. l0. 1909.

. 996,063. Patented June 27, 1911.

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l J1 000K'. SMOKELESS BOILER PURNAGE. APPLIOATION FILED AUG. 10. 1909.

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Patented June 27 jfl l Jal /L UNITED sTA'rEs Param EErcE.

JOHN COOK, OF BUFFALO, NEW YORK.

SMOKLESS BOILER-FURNACE Specication of Letters Patent. Patented June 27,1911.

Application filed Augustl, 1909. Serial No. 512,2 8.

To all 'whom ttrmay concem.

Be it known that I', JOHN COOK, a citizen of the United States, andresident. of Buf-A falo, in the countyl of Erie and State of New'furnates; and it has for its object the pro- '2'0 suring completecombustion.

Qarrangement and combination of S6 ing my invention,

' matically duction of a furnace in which substantially completecombustion takes place inthe combustion-chamber, resultant from theintroduction of air at the top 0f the fuel which passes down and uniteswith an upward' current of` air at a common point, at which point. thefuel is in 'an incandescent state. The air becomes thoroughly heated andunites with the volatile elements, thus asnother object of my inventionis the production of a furnace in which the fuel is stored in. twofuel-chambers at opposite sides of a combustion-chamber and is autofedto said combustion-chamber, and in which the air is introduced throughthe open tops of said fuel-.chambers also l through the sides of thesame and through 30 the grate srrpporting the' fuel.

,Other objects of myv invention will be apparent from thefollowingdescription.

My invention consists in the construction, parts to be hereinafterdescribed and particularly pointed out in the subjoined claims.

In the drawings Figure l is a central longitudinal section' of a furnaceembodyelevation. y Fig. 2 is a transverse section taken on line 2 2,Fig. 1. Fig. 3 is a trans,- verse4 section takenJon vline 3 3, Fig.- 1.Fig. 4 is a horizontal sect-ion taken on line 4 4, Fig. 1. Fig. 5*.is aside elevation of one of the side Fig. 6 is an end view ofthe same. Fig.7 is an enlarged vertical section, taken on .line 7 7, Fig. 5, Fig. 8'is a perspective View of the end of one o'f the actuatingbars foroperating t-he closures of the sideair-inlets.

Referringnow. to the drawings' in detail, corresponding letters ofreference refer to corresponding` parts in the several figures.

. The reference letter, A designates the oiler `which isl of vthe usualor, any suitboiler limprovements in smokeless boiler passages H1 theboiler being shown in' members closing, the outerl sides of the fuelstorage-chambers.

. able construction; it being shown as the f return-tube type beneathwhich the heat passes and returns through the tubes of the boiler,whence it passes through the drum or ichamber B to thel smoke-stack C.Said is provided with brackets D which 1 are supported on or embedded inthe brick` work E surrounding lat least part of the boiler.

Underneath the front end of the boiler :the furnace is divided intothree Vchambers by downwardly-converging longitudinally- I disposedwater-sections F which extend from the front wall f to the bridge-wallf1; the chambers G, G1 lying outside of said g water-sections being the:lire-boxes and serving also 'as fuel-storage chambers7 while the'interm'ediatevchamber G2 serves as the comi bustion-cha1nber- It is'tobe noted that the -fuel chambersG, G1 are gradually enlarged `towardtheir lower ends, while the co1nbustion chamber is gradually enlargedtoward its upper end. j v.

A grate H of any suitable type serves as the'bottom of the chambers G,G1, G2 and separates them from the ash-pit beneath; said grate beingvseparated from the lower edges of the4 water-sections F by narrow whichconnect the combustionchamber G2 with the fuel-chambers G,'G1, asclearly shown in Figs. 2 and'3. v v

In lieu of forming the outer sides of the fuel-chambers of brick, as isgenerally done, I provide,metallic'water-jackets I which are supportedon the ,brick-work closing the ;sides of the ash-pit i and secured attheir lends to the brick walls at the front and 'at' the .rear portionsofthe sides.

The4 water-sections F and the waterjackets I` are connected at or 'neartheir tops f with the boiler by pipes F1, I1, respectively, pipes I1preferably having indirect -connec tion with the boiler through theupper ends 'of pipes F 1into which they are threaded, as 'best shown inFig. 2. Said water-sections and water-jackets are also connected at ornear their bottoms to the bottom of the boiler by pipes F2, I2,respectively, pipes I2 preferably having indirect connection with theboiler through af portion of the pipes F2 into which they are' threaded.In this `manner complete circulation of the water -is obtained. Anyother arrangementfor assuring the through the water-sections andwaterjackets may be resorted to, but I consider proper circulation ofwater' enanas burning fuel at this 'pointl being always free fromunignited fuel, there is at all times a bed of incandescent fuel at thelower ends 4ofthe water-sections through which all air and unconsumedproductsof combustion must pass. The oxygen in the air passes into theincandescent bed and becomes 'intensely heated. It combines with theincandescent bed of fuel, or the coke. as it may be termed,

and also unites with the Volatile elements,

. assuring complete combustion. The hot air passes rearward through thecombustion chamber, through the passage K1, into the* smoke-box K,whence it returns through the tubes ofthe boiler and enters the drum orchamber B, thence out the smoke stack C.

The structure herein shown and described is a representative one onlyand it is apparent to any one skilled in the art to which this inventionappertains. that changes may be made therein without departing from my.

grate beneath said boiler, a combustion chamber centrally over saidgrate and having its side walls separated from said grate by fuelpassages, a'fuel chamber at eachside of said combustion 'chamber havingits up.-

perend open, said fuel chambers being provided with air passages, andmeans for'regulating theair passing through said passages.

3. A furnace com risinga boiler,ra fire grate beneath said oile'r, apairof water sections`spaced apart-and disposed on opposite sides of the'longitudinal centerto form la combustion chamberbetweenthe two, saidwater-sections being separated from the grate by spaces and also fromtheside walls of the furnace by spaces formingy fuel cham- ',bers, saidwater sectionsV being of greater height than width 'and divergingupwardly v and having connection with said boiler at high and lowpoints.

4. A furnace comprising a boiler, a grate A beneath; sa-id boiler,.water-jackets-formi-ng 1 the sides of the space between said boiler andsaid grate, a combustion-chamber centrally in said space, a fuel-chamberat each side of., said combustion-chamber, said fuelchamber beingseparated from said cdmbus- Ition-chamber by -intervening imperforatewalls themselves separated from eachother and having their lower endsspaced from i I said grate and their upper ends in Contact vwiththeboiler, and wateconnectiens between said water-jackets .connected tehigh and low points of said boiler. 1

5. A furnace comprising aV boiler, a grate beneath said boiler,water-jackets forming the sides of the space `between said boiler.

and\ said grate, acombustion-chamber centrally in said space, afuel-chamber at each side of said combustion-chamber, said fuel-`chamber being separated from the combustion-chamber by hollowcontinuous' imper- -forate walls including water-sections havingtlieir'lower ends spaced from said 4(frate, and the upper ends of saidwalls being 1n contact with .the boiler, and water-connection betweensaid boiler and said water-sections and also between said boiler andsaid waterjackets. Y v

6. A furnace comprising a boiler, a grate beneath said boiler andseparated therefrom by an intervening space, water-jackets forming thesides of said space and having airA tubes passing therethrough, acombustionchamber-centrally in said space underneath said boiler, afuel-chamber at each side of I 4said combustion-chamber, saidfuel-chamber being separated from said combustion-chamber by interveningwalls having their lower ends spaced from said grateand being open attheir upper ends for charging the same,

connections at high and' low points of said `water-jackets with saidboller, and dampersfor opening andclosingsaid air-tubes.

7. A furnace comprlslng'a boiler, a grate beneath said boiler andseparated therefrom by-an intervening space, imperforate watersectionsdividing said space into a. central combustion chamberl land sidefuel-chambers open at their ,upprer ends and connected at their lowerends-by passages between said sections and said grate, said sectionsdiverging upwardly to'form an upwardly flaring combustion-chamber anddownwardl flaring fuel-chambers, a pipe connected with the lower end ofeach water-section, a pipe connected to the bottom of said boiler andhaving connection with-thepipes of said watersections, blow-off pipes inconnection with the aforesaid pipes, and pipes connecting the upper endsof said' water-sections with the boiler above its bottom. y l

8. A furnace comprising a boiler, a grate beneath said boiler separatedtherefrom by an intervening space, water-jackets forming the sides of'said space, walls on opposite sides of the longitudinal center of saidspacey I and dividing'said space into a central combustion-chamber andside'fuel-chambers, the

lower end of saidwalls being spaced from said grate to formfuel-passages and the upper endsthereof being spaced from saidwater-jackets, pipes lea ing fr'm high pointsof said Water-jacke s tosaid boiler above its bottom, pipes connecting the lower ends of saidwater-jackets with the bottom lof said'boiler andy blow-off pipesconnected with said 'last-mentioned pipes. i

9. A furnace'comprising a boiler, a grate Cil -tubes therethrou h, twolongitudinally-dissaid air-tubes, and a rod connecting the dampersofeachwater-jacket to cause them 10 to move 1n unison.

beneatbsaid boiler and separated therefrom by an intervening space,water-'ackets forming the sides of said space an having airposed wallsdivi ing said space into a cen- JOHN COOK' tral combustion-chamber and-side chambers connected With said combustion-chamber, pivoted dempersclosing the outer ends .of

' Witnesses:

CHAs. E. MURRAY, JOHN J. LENAHAN.

Copies of this petent may be obtained for Ave cents each, by addressingvthe Commissioner of Patents,

Washington, D. C.

